Alkaline will index words, such as price=234 , in a special manner. You can consequently perform a numeric data search: price<234 , price=234 or price>234 .
All rules about case-sensitivity are preserved with the meta search. There is no partial word support for numerical meta tags, if the words "price=234", "aprice=234" and "priced=234" are in the index, searching for price=234 will only find "price=234" .